Nicola Peate dislocated her jaw while attempting to eat a triple-patty 'Kids in America' burger at Almost Famous restaurant in Liverpool, England.News.com.au

The triple-patty ‘Kids in America’ burger at Almost Famous restaurant in Liverpool, England. (News.com.au)

A British woman has dislocated her jaw trying to eat a ‘triple-patty’ hamburger.

Nicola Peate’s jaw locked and then popped out of place while she was biting into a triple-patty ‘Kids in America’ burger, complete with pretzels and candied bacon, at Almost Famous restaurant in Liverpool.

Ms Peate, 25, has Ehlers-Danlos syndrome, which includes sensitive joints that are prone to dislocation. But she says she never suspected chowing down on a burger could knock her jaw out of place.

“I didn’t think I’d dislocated it – you don’t expect it to happen eating a burger. But I tried to eat it with a knife and fork and couldn’t. I couldn’t open my mouth fully,” she said.

“I felt like I had a cramp in my tongue, then I started to get an ear ache and a headache.”

At the restaurant, Ms Peate laughed off her locked jaw and her fiance finished off her burger. However, she woke up the next day in unbearable pain.

“The next morning I woke up and felt really, really ill,” she said. “The whole side of my head was hurting. then it started to feel like it was in my jaw and I knew I’d dislocated it.”

Emergency staff at Royal Liverpool University Hospital X-rayed her jaw and confirmed it was dislocated. A doctor pushed her jaw back into place with his thumbs, the hospital said.

“The minute it went back in it was like turning a tap off in my head,” said Ms Peate.

Doctors advised her to take small bites and avoid yawning.

Ms Peate, who is getting married next year, says she’ll “stick to canapé sized burgers” at her wedding.

The burger restaurant has invited her back for another go at the burger and offered to supply an emergency kit of painkillers and cutlery, so she can cut her burger into more manageable chunks.